Husqvarna 590880401 Hex Head Cap Screw .625-18 X 2.25

The Husqvarna 590880401 Hex Head Cap Screw.625-18 X 2.25 is a genuine OEM fastener designed for the FS3500G floor saw. Sourced directly from Husqvarna, this screw is manufactured to the exact thread pitch, diameter, and length specification required by the machine — ensuring proper clamping load and a secure assembly. DHS Equipment supplies this part to help keep your FS3500G operating as intended. Cross-reference part number 590880401 against your parts diagram before ordering to confirm correct placement.

Key Features

• Correct Thread Specification — Manufactured to the exact .625-18 thread pitch and 2.25-inch length, matching the OEM fastener requirement for the FS3500G.
• Genuine OEM Grade — Produced to Husqvarna's material and tensile strength standards, ensuring the fastener holds its clamping load under the vibration and stress loads of floor saw operation.
• Direct Replacement Fit — Drops into the original fastener position with no modification, maintaining proper torque specs and assembly integrity.
• FS3500G Floor Saw Fitment — Confirmed fitment for the FS3500G walk-behind floor saw; verify placement using your parts diagram with part number 590880401.
• Assembly Integrity — A correctly spec'd fastener prevents loosening of critical components during cutting operations, where vibration can work an undersized or incorrect screw free over time.

A hex head cap screw is a precision fastener used to secure structural and mechanical assemblies within the floor saw. Unlike a standard bolt, a cap screw is designed to thread directly into a tapped hole, providing a tight, stable joint without a nut. Using the correct fastener — with the right thread pitch, shank length, and material grade — is essential on cutting equipment, where vibration and operational loads are high. Installing an incorrect fastener can result in joint loosening, component misalignment, or premature fastener failure during use.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.